Perforating-iron



H. A. SILVERMAN.

PERFORATING IRON. APPLICATION FILED MAY 21. 1920.

Patented Dec. A27, 1921.

/NVENI'UR UNITED STATES HARRY A. SILVERMAN, 0F yNEIN? YORK, N. Y.

PATENT OFFICE.

PEREORATING-IRDN.

Application filed May 21,

To all whom it may concern:

Be it known that I, HARRY A. SILVERMAN, a citizen of the United States, residing in the borough of Bronx, city and State of New York, have invented an Improvement in Perforating-Irons, of which the following is a specification.

This invention relates to a perforating iron adapted to be used in perforating material preferably in sheets along predetermined lines in making patterns and other similar articles. I am awarethat heretofore various forms of devices have been used for this purpose and my invention relates more particularly to that type of such devices in which the perforating point-s of the apparatus are heated to a sufficient extent to cause a cleanor smooth edged hole or perforation to be made in the material in the use of the tool. In some instances more or less coinplicated devices have been employed for heating perforating irons electrically and in order to overcome these complications and reduce the cost of manufacture at the same time obtaining the same results, I propose to employ an iron comprising a frame in which there is revolubly mounted a vwheel having a toothed or serrated edge together with means for heating the wheel so that the serrated edge is maintained at an adequate temperature to. properly perforate the material in making the pattern. The apparatusalso includes an adjustable foot fo-r determining the position of the teeth of the iron and consequently the size of the perforation which is made in the material in the manufacture of the pattern. In the invention as hereinafter more particularly described the perforating Wheel is preferably mounted in a frame through whichy a suitable gas is supplied and burned adjacent the heating member of the iron to maintain the same at the required temperature, While the perforating member is mounted and secured in place in the parts which form, the Wheel.

In the drawing: Y j

Figure 1 is a central longitudinal cioss section illustrating aiperforating iron made in accordance with this invention, and

Fig. 2is a side elevation of the same.

In the construction of the perforating iron made in accordance with this invention, I employ a handle 10 through which there is passed a feed pipe 11 for supplying gas or other inflammable fluid for'heating the iron. At one end of the handle this feed pipe is Specification of Letters Patent.

Patented Dec. 27, 1921.

1920. seriai'No. 383,108.

The frame therefore comprises the branch pipes l2 and 13 which form a yoke or frame in which the iron is placed. The outer portions of these branch pipes are substantially parallel and closed at their extremities and on their inner portions provided respectively with lugs 14 and 15 forming bearings for the revoluble parts of the iron as hereinafter described, the lugs 14 and 15 being hollow and the spaces therein communicating with the interior of the branch pipes in order that the gas or other fluid employed may liow freely from the pipes to the interior of the lugs to be emitted therefrom, as hereinafter described, and burned to heat the perforating member of the iron.

The revoluble parts of the iron` as clearly illustrated in the drawing, preferably include a disk perforating member 16 which is made of iron or any other suitable material and provided with a serrated periphery, the teeth 17 of which form the means for puncturing or perforating the material from which the pattern is made. At the sides of the disk 16 I may employ washers 18 and 19 made of asbestos or any other ysimilarv heat insulating material, and exteriorly of the washers there are cover plates 2O and 21. The cover plate 20 preferably comprises a hub 22 with ribs or spokes 23 extending therefrom and connecting the same to a flange or rim 24, the hub 22 being adapted to be received on the lug 14. Similarly the cover plate 21 comprises a hub 25 with ribs or spokes 26 extending therefrom and connecting the hub with a flange or rim 27, the hub 25'being adapted to be received and to turn on the lug 15. `The diameters of the rims 24 and 27 and the washers 18 and 19 are substantially the same. The rims 24 and 27 and the washers 18 and 19 with the disk 16 intervening between the washers are connected by bolts28 passing through the same'or in any other desired manner. These parts when thusconnected comprise a wheel structure which is journaled on the lugs 14 and 15 so as to turn within the yoke frame to which the handle is connected.

At the inner or adjacent ends thereof the lugs 14 and 15 are provided centrally with apertures 29 and 3() forming orifices from which the gas is emitted from the spaces or chambers within the lugs so that the gas may be ignited and burned from these oriiices WithV the iiames directly inwardly or toward each other ,so as to heat. theV disk 16 Which at its central portion'forl this purpose is preferably reinforced as indicatedat 3l.

Connected to and extending from the supply pipe 1l is atube 32. In this is slidably mounted a rod 33 connected toa' footor guide member 34, it being adjustable to position relatively to the serrated edge of the diskl by shifting the position of the rod in the tube and securing the parts in place by a set screw 35 orotherwise. As is clearly shownin the drawing the foot member'is provided with aV slot 3G through Vivliichthe teeth or serratededge of the diskmay be made to extend so as to determine the extent to which the teeth enters the material of which the pattern is to be made and consequentlythe sizeof the perforations outlining the pattern;V

In the use of the hereinbefore constructed perforatingiron acetylene or any vother form of gas or vaporized hydro-carbon from Vany suitable 'source may be suppliedto' the pipe 1l through a hose 37 or otherwise and the gas after. passing through the supply pipe and its branches Vforming the frame for the revoluble parts of the iron is madeto burn at the oriiices 29 and 30 as hereinbe` Y. foredescribed to heat the disk 16 te the re quired temperature lor causing thedesired cle'an cut perforations to beniade by the' heated teeth at the periphery of the iron in passing the saine over the material to be perforated in making the pattern.

I claim as my invention:A y l. A per'forating apparatus comprising arevoluble member Vhaving a serrated edge,

and a frame including1 a yoke and bearings onivhich the revoluble member is journaled and-through which yoke andthe said bearings gas is supplied to heat the revoluble member. Y

V52,.'A perforating apparatus comprisinga revoluble member having a serrated periphery, a gas supply pipe, and a tubular'yoke frame extending` from the suppl-y pipe and in which the said revoluble member is mounted and through which gas is supplied to the said revoluble member to heat th'efv 8, A'perforatingapparatus comprising a disk having its periphery serrated to form perforating teeth, cover members connected to the said disk, and a yoke frame in which the Said cover members and disk are )our` both sides ofthe said disk, means` for con-V necting the said disk in the said 'cover plates,

and a tubular yoke frame having lugs on the inner faces of the b -ra-iiches of the yoke and .upon which the said cover plates are mounted and through which from Ythe said tubular yoke gas is supplied 'to heat the. said disk. Y

' '6.l A perforating apparatus comprising a disk having a serrated edge, Vcover plates on both sides of the said disk, heat insulating' WashersV on both sides of the disk, `cover plates on lboth sides ofthe heat insulating Washers, boltsv extending through the cover plates, the said Washers and the. diskto maintain the said parts in'an assembled relationship, and al'tubular yoke frame haivvw ing lugs on the inner faces of Vthe'branches fj thereof and upon which the 'said cover platesare journaled, through which lugs from Ythe tubularyoke gas is supplied to heat the said disk.l

T.l A perforating apparatus comprisingfaA icvoluble member'having a serrated periphery, a gas supply pipe, a tubular yokefr'ame extending from the supply pipe andV in which the said revolu-ble member is mounted Aand through which gasis supplied to the said revoluble member to' heat Vthe same, a

guide member,-and means for adjusting theV same to position to determine the extent Vof,

the perforationmade by theapparatus.

S. A perforating apparatus comprising aV the said cover plates gas is supplied to heat Vthe said disk, a guide member, Vand means for adjustingthe same to'posi'tion to deter-i mine ltheezitent ofthe perforation made by the apparatus. v

Signed by methis 14th dav of May, 1920.

i iiiiirav a. siLvnaMAN.

viie 

